Atacama Cosmology Telescope: A measurement of the thermal Sunyaev-Zel'dovich effect using the skewness of the CMB temperature distribution

Michael J. Wilson; Blake D. Sherwin; J. Colin Hill; Graeme Addison; Nick Battaglia; J. Richard Bond; Sudeep Das; Mark J. Devlin; Joanna Dunkley; Rolando Dünner; Joseph W. Fowler; Megan B. Gralla; Amir Hajian; Mark Halpern; Matt Hilton; Adam D. Hincks; Renée Hlozek; Kevin Huffenberger; John P. Hughes; Arthur Kosowsky; Thibaut Louis; Tobias A. Marriage; Danica Marsden; Felipe Menanteau; Kavilan Moodley; Michael D. Niemack; Michael R. Nolta; Lyman A. Page; Bruce Partridge; Erik D. Reese; Neelima Sehgal; Jon Sievers; David N. Spergel; Suzanne T. Staggs; Daniel S. Swetz; Eric R. Switzer; Hy Trac; Ed Wollack

doi:10.1103/PhysRevD.86.122005

Atacama Cosmology Telescope: A measurement of the thermal Sunyaev-Zel'dovich effect using the skewness of the CMB temperature distribution

Michael J. Wilson, Blake D. Sherwin, J. Colin Hill, Graeme Addison, Nick Battaglia, J. Richard Bond, Sudeep Das, Mark J. Devlin, Joanna Dunkley, Rolando Dünner, Joseph W. Fowler, Megan B. Gralla, Amir Hajian, Mark Halpern, Matt Hilton, Adam D. Hincks, Renée Hlozek, Kevin Huffenberger, John P. Hughes, Arthur KosowskyThibaut Louis, Tobias A. Marriage, Danica Marsden, Felipe Menanteau, Kavilan Moodley, Michael D. Niemack, Michael R. Nolta, Lyman A. Page, Bruce Partridge, Erik D. Reese, Neelima Sehgal, Jon Sievers, David N. Spergel, Suzanne T. Staggs, Daniel S. Swetz, Eric R. Switzer, Hy Trac, Ed Wollack

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Abstract

We present a detection of the unnormalized skewness âŸ̈ T^Ëœ3(n)âY induced by the thermal Sunyaev-Zel'dovich (tSZ) effect in filtered Atacama Cosmology Telescope (ACT) 148 GHz cosmic microwave background temperature maps. Contamination due to infrared and radio sources is minimized by template subtraction of resolved sources and by constructing a mask using outlying values in the 218 GHz (tSZ-null) ACT maps. We measure âŸ̈T^Ëœ3(n^)âY=-31±6 μK3 (Gaussian statistics assumed) or ±14 μK3 (including non-Gaussian corrections) in the filtered ACT data, a 5σ detection. We show that the skewness is a sensitive probe of σ₈, and use analytic calculations and tSZ simulations to obtain cosmological constraints from this measurement. From this signal alone we infer a value of σ₈=0.79-0.03+0.03 (68% C.L.) â€-0.06+0.06 (95% C.L.). Our results demonstrate that measurements of non-Gaussianity can be a useful method for characterizing the tSZ effect and extracting the underlying cosmological information.

Original language	English (US)
Article number	122005
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	86
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevD.86.122005
State	Published - Dec 20 2012

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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10.1103/PhysRevD.86.122005

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Wilson, M. J., Sherwin, B. D., Hill, J. C., Addison, G., Battaglia, N., Bond, J. R., Das, S., Devlin, M. J., Dunkley, J., Dünner, R., Fowler, J. W., Gralla, M. B., Hajian, A., Halpern, M., Hilton, M., Hincks, A. D., Hlozek, R., Huffenberger, K., Hughes, J. P., ... Wollack, E. (2012). Atacama Cosmology Telescope: A measurement of the thermal Sunyaev-Zel'dovich effect using the skewness of the CMB temperature distribution. Physical Review D - Particles, Fields, Gravitation and Cosmology, 86(12), Article 122005. https://doi.org/10.1103/PhysRevD.86.122005

@article{17c04905095044c79877c5c7674c1a92,

title = "Atacama Cosmology Telescope: A measurement of the thermal Sunyaev-Zel'dovich effect using the skewness of the CMB temperature distribution",

abstract = "We present a detection of the unnormalized skewness {\^a}{\"Ÿ} T{\"E}{\oe}3(n){\^a}Y induced by the thermal Sunyaev-Zel'dovich (tSZ) effect in filtered Atacama Cosmology Telescope (ACT) 148 GHz cosmic microwave background temperature maps. Contamination due to infrared and radio sources is minimized by template subtraction of resolved sources and by constructing a mask using outlying values in the 218 GHz (tSZ-null) ACT maps. We measure {\^a}{\"Ÿ}T{\"E}{\oe}3(n^){\^a}Y=-31±6 μK3 (Gaussian statistics assumed) or ±14 μK3 (including non-Gaussian corrections) in the filtered ACT data, a 5σ detection. We show that the skewness is a sensitive probe of σ8, and use analytic calculations and tSZ simulations to obtain cosmological constraints from this measurement. From this signal alone we infer a value of σ8=0.79-0.03+0.03 (68% C.L.) {\^a}€-0.06+0.06 (95% C.L.). Our results demonstrate that measurements of non-Gaussianity can be a useful method for characterizing the tSZ effect and extracting the underlying cosmological information.",

author = "Wilson, {Michael J.} and Sherwin, {Blake D.} and Hill, {J. Colin} and Graeme Addison and Nick Battaglia and Bond, {J. Richard} and Sudeep Das and Devlin, {Mark J.} and Joanna Dunkley and Rolando D{\"u}nner and Fowler, {Joseph W.} and Gralla, {Megan B.} and Amir Hajian and Mark Halpern and Matt Hilton and Hincks, {Adam D.} and Ren{\'e}e Hlozek and Kevin Huffenberger and Hughes, {John P.} and Arthur Kosowsky and Thibaut Louis and Marriage, {Tobias A.} and Danica Marsden and Felipe Menanteau and Kavilan Moodley and Niemack, {Michael D.} and Nolta, {Michael R.} and Page, {Lyman A.} and Bruce Partridge and Reese, {Erik D.} and Neelima Sehgal and Jon Sievers and Spergel, {David N.} and Staggs, {Suzanne T.} and Swetz, {Daniel S.} and Switzer, {Eric R.} and Hy Trac and Ed Wollack",

year = "2012",

month = dec,

day = "20",

doi = "10.1103/PhysRevD.86.122005",

language = "English (US)",

volume = "86",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "1550-7998",

number = "12",

}

Wilson, MJ, Sherwin, BD, Hill, JC, Addison, G, Battaglia, N, Bond, JR, Das, S, Devlin, MJ, Dunkley, J, Dünner, R, Fowler, JW, Gralla, MB, Hajian, A, Halpern, M, Hilton, M, Hincks, AD, Hlozek, R, Huffenberger, K, Hughes, JP, Kosowsky, A, Louis, T, Marriage, TA, Marsden, D, Menanteau, F, Moodley, K, Niemack, MD, Nolta, MR, Page, LA, Partridge, B, Reese, ED, Sehgal, N, Sievers, J, Spergel, DN, Staggs, ST, Swetz, DS, Switzer, ER, Trac, H & Wollack, E 2012, 'Atacama Cosmology Telescope: A measurement of the thermal Sunyaev-Zel'dovich effect using the skewness of the CMB temperature distribution', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 86, no. 12, 122005. https://doi.org/10.1103/PhysRevD.86.122005

Atacama Cosmology Telescope: A measurement of the thermal Sunyaev-Zel'dovich effect using the skewness of the CMB temperature distribution. / Wilson, Michael J.; Sherwin, Blake D.; Hill, J. Colin et al.
In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 86, No. 12, 122005, 20.12.2012.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Atacama Cosmology Telescope

T2 - A measurement of the thermal Sunyaev-Zel'dovich effect using the skewness of the CMB temperature distribution

AU - Wilson, Michael J.

AU - Sherwin, Blake D.

AU - Hill, J. Colin

AU - Addison, Graeme

AU - Battaglia, Nick

AU - Bond, J. Richard

AU - Das, Sudeep

AU - Devlin, Mark J.

AU - Dunkley, Joanna

AU - Dünner, Rolando

AU - Fowler, Joseph W.

AU - Gralla, Megan B.

AU - Hajian, Amir

AU - Halpern, Mark

AU - Hilton, Matt

AU - Hincks, Adam D.

AU - Hlozek, Renée

AU - Huffenberger, Kevin

AU - Hughes, John P.

AU - Kosowsky, Arthur

AU - Louis, Thibaut

AU - Marriage, Tobias A.

AU - Marsden, Danica

AU - Menanteau, Felipe

AU - Moodley, Kavilan

AU - Niemack, Michael D.

AU - Nolta, Michael R.

AU - Page, Lyman A.

AU - Partridge, Bruce

AU - Reese, Erik D.

AU - Sehgal, Neelima

AU - Sievers, Jon

AU - Spergel, David N.

AU - Staggs, Suzanne T.

AU - Swetz, Daniel S.

AU - Switzer, Eric R.

AU - Trac, Hy

AU - Wollack, Ed

PY - 2012/12/20

Y1 - 2012/12/20

N2 - We present a detection of the unnormalized skewness âŸ̈ TËœ3(n)âY induced by the thermal Sunyaev-Zel'dovich (tSZ) effect in filtered Atacama Cosmology Telescope (ACT) 148 GHz cosmic microwave background temperature maps. Contamination due to infrared and radio sources is minimized by template subtraction of resolved sources and by constructing a mask using outlying values in the 218 GHz (tSZ-null) ACT maps. We measure âŸ̈TËœ3(n^)âY=-31±6 μK3 (Gaussian statistics assumed) or ±14 μK3 (including non-Gaussian corrections) in the filtered ACT data, a 5σ detection. We show that the skewness is a sensitive probe of σ8, and use analytic calculations and tSZ simulations to obtain cosmological constraints from this measurement. From this signal alone we infer a value of σ8=0.79-0.03+0.03 (68% C.L.) â€-0.06+0.06 (95% C.L.). Our results demonstrate that measurements of non-Gaussianity can be a useful method for characterizing the tSZ effect and extracting the underlying cosmological information.

AB - We present a detection of the unnormalized skewness âŸ̈ TËœ3(n)âY induced by the thermal Sunyaev-Zel'dovich (tSZ) effect in filtered Atacama Cosmology Telescope (ACT) 148 GHz cosmic microwave background temperature maps. Contamination due to infrared and radio sources is minimized by template subtraction of resolved sources and by constructing a mask using outlying values in the 218 GHz (tSZ-null) ACT maps. We measure âŸ̈TËœ3(n^)âY=-31±6 μK3 (Gaussian statistics assumed) or ±14 μK3 (including non-Gaussian corrections) in the filtered ACT data, a 5σ detection. We show that the skewness is a sensitive probe of σ8, and use analytic calculations and tSZ simulations to obtain cosmological constraints from this measurement. From this signal alone we infer a value of σ8=0.79-0.03+0.03 (68% C.L.) â€-0.06+0.06 (95% C.L.). Our results demonstrate that measurements of non-Gaussianity can be a useful method for characterizing the tSZ effect and extracting the underlying cosmological information.

UR - http://www.scopus.com/inward/record.url?scp=84871597231&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84871597231&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.86.122005

DO - 10.1103/PhysRevD.86.122005

M3 - Article

AN - SCOPUS:84871597231

SN - 1550-7998

VL - 86

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 12

M1 - 122005

ER -

Atacama Cosmology Telescope: A measurement of the thermal Sunyaev-Zel'dovich effect using the skewness of the CMB temperature distribution

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